Improvement in lining rotary puddling-furnaces



PATENT FFIGE.

GEORGE E. SELLERS, OF WILMINGTON, DELAWARE.

IMPROVEMENT IN LINING ROTARY PUDDLlNG-FURNACES.

Specification forming part of Letters Patent No. 129,685, dated July 23, 1872.

To all whom it may concern:

Be it known that I, GEORGE E. SELLERS, of Wilmington, county of New (lastle, Delaware, have made certain Improvements in Lining Rotary Paddling Vessels and maintaining the same in repair, of which the following is a specification:

The rotary puddling vessel to which these improvements have been applied is that patented to William Sellers March 5, 1872, No. 124,224; and the following description will be clearly understood by referring to the drawing" and specification in the aforesaid patent.

The lining (or, as it is technically called, the fix) for the sides of the ordinary paddling-furnace is preferably composed of iron ore held in place withthe cinder of the furnace, and the use is so universal that it is unnecessary to describe its application. In the ordinary furnace the sides are inclined at a fixed angle so asto support the lining, and the fix can be readily applied in a plastic state; but in the rotary furnace such fix would fall from the sides of the vessel as the vessel is rotated; and one of the objectsof my improvement is A to provide a means for holding the Ffix in po sition while the vessel which contains it is revolvin g. Afurther object of my improvement is to provide a convenient method for building 'the fix into the puddling vessel; and a still furtherobj ect of my improvement is to provide a simple and convenient method for repairing the same as it is worn by use. Preparatory to lining thevessel with fix the interior should be divided into three or more divisions by 3 strips of metal attached to or cast upon the interior surface of the revolvingvessel. These strips may be about one inch in height, or even less, and about three-quarters of an inch wide,

their only use being to prevent the lining from fi'x is to be attached. The first or preliminary fix is made by pulverizing ore and. mixing it justbefore using with cement of suitable quality, such as Portland cement and silicate of soda, in the following proportions: To every ten parts (by measurement) of ore I add one and a third part of cement, and to each bushel of this mixture I add one and a half gallon of silicate of .soda the whole to be thoroughly mixed through a loam or pug mill to insure athorough incorporation of the silicate of soda 7 of wood of a depth equal to that of the preliminary fix, the purpose of these strips being to support the edges of the preliminary fix when rammed into this division, as hereinafter described. Into this division I ram or pack the prepared material to a uniform thickness of about two inches. I then turn this division up, and treat the second and third or more divisions in a similar manner. I then remove the wooden strips and ram the prepared material into the spaces left by removing the strips, and in a few hours the whole mass will set so as to be quite solid. I now apply heat until this preliminary fix is a bright red, and

upon this I apply fluid-tap cinder, rotating the vessel until the whole surface of the fix is coated with cinder. If no convenient means for melting the cinder separately from the rotary puddler is at hand,it may be melted upon the fix itself. After the fix has been covered with the fluid-cinder the heat should be slackened to allow the cinder to set. Upon this fix, as a base, I then apply the working-fix, which is composed of lump-ore, scale, bull-dog, and cinder-tap, or lumpore and cinder-tap alone.

This working-fix I- attach to the base in the following manner: Upon about one-third of the lower interior surface I apply the workingfix above described to a depth of from four to six inches, as may be desired. I then'raise the heat of the furnace sufficiently to meltthe cinder, and pack or ram the ore together, and then cool the furnace down until the cinder sets, which may be facilitated by dashing water upon it in suitable quantity. I then treat another one-third of the interior of the vessel in the same manner, and so on until the whole is completed, when the vessel is ready for use.

Having thus described the composition and mode of using my improvement, I claim as new and desire to secure by Letters Patent 1. As an improvement in the art of lining rotary paddling-vessels, the method hereinbefore set forth of retaining the fix in position by partitions transverse to the line of rotation of the puddlin g vessel.

2. The improvement in the art of lining rotary puddlin g vessels, substantially as hereinbefore set forth, by smelting a working-fix upon a preliminary fix composed of the ingredients, herein specified, previously attached to the paddling vessel in the manner described.

3. The improvement in the art of lining rotary puddlingvessels, as hereinbefore set forth, by recharging and resmelting fresh material in the worn places of the working-fix.

4. The improvement in the art of lining rotary paddling vessels by means of a preliminary fix composedof pulverized iron ore,Portland cement, and silicate of soda, substantially as hereinbefore set forth.

In testimony whereof I have hereunto subscribed my name.

GEORGE H. SELLERS.

Witnesses:

E I GARRETT, ALBERT W. SMITH. 

